Question

120 students appeared in an examination. how many have failed if 2/3 of them have passed​

Answer 1

Explanation:

If
`(2)/(3)` passed the exam then:

`(3)/(3) -(2)/(3) = (1)/(3)` failed the exam

now to find the number which failed we multiply:

`(1)/(3) \cdot 120 = 40` and 40 is our answer

Answer 2

40 failed

Explanation:

2/3 of 120 is 80, so you subtract the 80 who passed from the 120 total to get 40 students who failed